Check valve structure



June 23, 1931. F. YARDLEY 1,811,166

cH Ecx VALVE TRUcTuRE Filed April 14. 1930 Patented June 23, 1931 UNITEDSTATES PATENT OFFICE FAR-NHAM YARDLEY, OF WEST ORANGE, NEW JERSEY,ASSIGNOR TO JENKINS BROS.

'OF NEW YORK, N. Y., A CORPORATION OF NEW JERSEY 7 CHECK VALVE STRUCTUREApplication filed April 14,

The invention relates to check valves of the'general type shown in myprior application Serial No. 397,685, filed October 5, 1929, in whichthe valve disk is associated with a floating guide, vwhich is traversedby the stem on the back of the valve disk and is held in engagement withan abutment on the valve casing by the usual valve spring, the presentinvention having for its object the adaptation of the same generalstructural and operative principles to a valve in which the inlet andoutlet openings are angularly disposed.

The invent-ion is illustrated in the accompanying drawings, in which 2Fig. 1 is a sectional elevation of the complete check valve structure.

Fig. 2 is a horizontal section on line 2-2 of Fig. 1.

Referring to the drawings, 1 indicates the valve casing having an inletopening 2 and an outlet opening 3 disposed at right angles to the inlet.The portion of the casing in axial alignment with the inlet opening 2 isprovided with an opening at internally threaded, so that, in its generalform, the valve casing is much the same as a T-coupling.

Formed integrally with the casing is a partition 5 extendingtransversely of the inlet and provided with the usual port having abeveled valve seat 6, with which cooperates the valve disk 7 having theguide lugs or feathers 8 on its face, which engage the walls of the portor opening and serve to guide the disk in its movements to and from itsseat. The back of the disk is provided with a stem 9 surrounded by ahelical spring 10, which latter serves to force the disk to its seat andto maintain a fluid-tight seal between the disk and the seat, when thevalve is closed.

Fitted in the threaded opening 4 is a cap or closure 12, which includesa rim 13 eX- tending within the valve casing and constitutes an abutmentfor a floating guide plate 15, which is centrally perforated to receivethe stem 9 of the valve disk and is held in engagement with the rim 13by the helical spring 10. The rim 13 is spaced from the body of the cap12 by means of lugs 14, which 1930. Serial No. 444,318.

provide openings to permit the ready circulation of fluid about the rim13 and prevent the formation of a pocket in the cap structure.

It will be noted that the guide plate 15 is capable of limited lateralmovement with respect to the annular rim 13, which it abuts, but willserve to guide the valve disk in its movements and permit the disk toadjust itself to any necessary position to insure a sealing fit with itsseat.

WVhat I claim is:

1. A check valve structure, comprising a V casing having angularlydisposed inlet and outlet openings, an intermediate valve seat, and athird opening parallel with the valve seat, a valve disk having guidemembers on its face cooperating with the seat and a stem on its back, ascrew cap closing the third opening and having a rim extending withinthe casing, a floating guide plate slidably en-v gaging said rim andtraversed by the valve stem, and a spring surrounding the stem andengaging said guide plate.

2. A check valve structure, comprising a casing having angularlydisposed inlet and outlet openings, an intermediate valve seat, and athird opening parallel with the'valve seat, a valve disk having guidemembers on its face cooperating with the seat and a stem on its back, ascrew cap closing the third opening and having a circular rim supportedby spaced lugs extending within the casing, a floating'guide plateengaging said rim and traversed by the valve stem, and a springsurrounding the stem and engaging saidguide plate.

In testimony whereof I affix my signature.

FARNHAM YARDLEY.

